unicore UM621 Series Скачать руководство пользователя | Manualshive

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和芯星通科技（北京）有限公司

Unicore Communications, Inc.

北京市海淀区丰贤东路 7 号北斗星通大厦三层

F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China,

100094

www.unicorecomm.com

Phone: 86-10-69939800

Fax: 86-10-69939888

[email protected]

www.unicorecomm.com

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Содержание UM621 Series

Страница 1: ...E REFERENCE DESIGN WWW UNICORECOMM COM Copyright 2009 2023 Unicore Communications Inc Data subject to change without notice UM621 Series Automotive Grade Dual frequency Multi GNSS Integrated Positioning Module ...

Страница 2: ...vice mark of Unicore products or their product serial referred to in this manual collectively Unicore Trademarks This manual or any part of it shall not be deemed as either expressly implied by estoppel or any other form the granting or transferring of Unicore rights and or interests including but not limited to the aforementioned trademark rights in whole or in part Disclaimer The information con...

Страница 3: ...UM621 Series Hardware Reference Design ii our local authorized distributor for the most up to date version of this manual along with any addenda or corrigenda ...

Страница 4: ...I Contents 1 Reference Circuit Using an Active Antenna 1 2 Reference Circuit Using a Passive Antenna 2 3 Power Supply Requirements 3 4 Recommended BOM 4 ...

Страница 5: ...odule s main supply VCC use the same power rail the ESD surge and overvoltage from the antenna will have an effect on VCC which may cause damage to the module Therefore it s recommended to design an independent power rail for the antenna to reduce the possibility of damage to the module The supply voltage for VBCKP is 1 7 V 3 6 V Requirement for the odometer speed pulse width 100 μs frequency 5K H...

Страница 6: ...odule in order to ensure the performance of the system For the RF routing antenna LNA RF_IN note the 50 Ω impedance matching The supply voltage for VBCKP is 1 7 V 3 6 V Requirement for the odometer speed pulse width 100 μs frequency 5 KHz Active Low VCC 2 7 V 3 6 V VBCKP 1 7 V 3 6 V RF Short 50ohm Line Figure 2 1 Reference Circuit Using a Passive Antenna ...

Страница 7: ... than 500 ms Backup Supply V_BCKP If the hot start function is needed users should supply backup power to the module The voltage range of V_BCKP is 1 7 V 3 6 V Notes The V_BCKP initial level when power on should be less than 0 4 V The V_BCKP ramp when power on should be monotonic without plateaus The voltages of undershoot and ringing should be within 5 V_BCKP V_BCKP power on waveform The time int...

Страница 8: ...4 4 Recommended BOM Component Order No Manufacturer U1 RS 232 Transceivers MAX3232EUE TI U2 LNA MXDLN14TP MAXSCEND ...

Страница 9: ...公司 Unicore Communications Inc 北京市海淀区丰贤东路 7 号北斗星通大厦三层 F3 No 7 Fengxian East Road Haidian Beijing P R China 100094 www unicorecomm com Phone 86 10 69939800 Fax 86 10 69939888 info unicorecomm com www unicorecomm com ...

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